0025133: TKOpenGl - Crash on closing a view containing presentations with capping
[occt.git] / src / OpenGl / OpenGl_Flipper.hxx
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d5f74e42 1// Copyright (c) 2013-2014 OPEN CASCADE SAS
938d4544 2//
973c2be1 3// This file is part of Open CASCADE Technology software library.
938d4544 4//
d5f74e42 5// This library is free software; you can redistribute it and/or modify it under
6// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 7// by the Free Software Foundation, with special exception defined in the file
8// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
9// distribution for complete text of the license and disclaimer of any warranty.
938d4544 10//
973c2be1 11// Alternatively, this file may be used under the terms of Open CASCADE
12// commercial license or contractual agreement.
938d4544 13
14#ifndef OpenGl_Flipper_Header
15#define OpenGl_Flipper_Header
16
17#include <OpenGl_Element.hxx>
18#include <OpenGl_Vec.hxx>
19#include <Handle_OpenGl_Workspace.hxx>
20
21class gp_Ax2;
22
23//! Being rendered, the elements modifies current model-view matrix such that the axes of
24//! the specified reference system (in model space) become oriented in the following way:
25//! - X - heads to the right side of view.
26//! - Y - heads to the up side of view.
27//! - N(Z) - heads towards the screen.
28//! Originally, this element serves for need of flipping the 3D text of dimension presentations.
29class OpenGl_Flipper : public OpenGl_Element
30{
31public:
32
33 //! Construct rendering element to flip model-view matrix
34 //! along the reference system to ensure up-Y, right-X orientation.
35 //! @param theReferenceSystem [in] the reference coordinate system.
36 Standard_EXPORT OpenGl_Flipper (const gp_Ax2& theReferenceSystem);
37
38 //! Set options for the element.
39 //! @param theIsEnabled [in] flag indicates whether the flipper
40 //! matrix modification should be set up or restored back.
41 void SetOptions (const Standard_Boolean theIsEnabled) { myIsEnabled = theIsEnabled; }
42
43 Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const;
10b9c7df 44 Standard_EXPORT virtual void Release (OpenGl_Context* theCtx);
938d4544 45
46public:
47
48 DEFINE_STANDARD_ALLOC
49
50protected:
51
52 OpenGl_Vec4 myReferenceOrigin;
53 OpenGl_Vec4 myReferenceX;
54 OpenGl_Vec4 myReferenceY;
55 OpenGl_Vec4 myReferenceZ;
56 Standard_Boolean myIsEnabled;
57
58};
59
60#endif // OpenGl_Flipper_Header